Timeline for Can an electromagnetic wave be polarised in the direction it propagates?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
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| Feb 10 at 14:14 | comment | added | Andrew Steane | Yes one should include some comments on waveguides when answering this kind of question. One might add that when you have two plane waves propagating in directions ${\bf k}_1$ and ${\bf k}_2$, there is some sort of propagation in the direction $({\bf k}_1 + {\bf k}_2)/2$, and this direction is not perpendicular to the fields. The waveguide case can be viewed as an example of this. | |
| S Feb 8 at 17:28 | review | First answers | |||
| Feb 8 at 17:34 | |||||
| S Feb 8 at 17:28 | history | edited | hyportnex | CC BY-SA 4.0 |
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| Feb 8 at 17:25 | comment | added | hyportnex | This is incorrect as stated. The TE and TM fields of homogeneous waveguides completely filled with lossless dielectric have $H_z$ and $E_z$ longitudinal components, resp., and these non-zero components are parallel with the axis along which the wave propagates. These are actually dispersive waves despite the medium being ideal completely non-dispersive. The reason for dispersion is the restriction of the wave by the conductive (metallic) enclosure (boundary condition). | |
| S Feb 8 at 16:40 | review | First answers | |||
| Feb 8 at 16:51 | |||||
| S Feb 8 at 16:40 | history | answered | JL14 | CC BY-SA 4.0 |